EP3663140B1 - Dispositif de protection d'occupants - Google Patents

Dispositif de protection d'occupants Download PDF

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Publication number
EP3663140B1
EP3663140B1 EP18841073.2A EP18841073A EP3663140B1 EP 3663140 B1 EP3663140 B1 EP 3663140B1 EP 18841073 A EP18841073 A EP 18841073A EP 3663140 B1 EP3663140 B1 EP 3663140B1
Authority
EP
European Patent Office
Prior art keywords
chamber
deployed
vehicle
airbag
passenger
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18841073.2A
Other languages
German (de)
English (en)
Other versions
EP3663140A1 (fr
EP3663140A4 (fr
Inventor
Yuto KOBAYASHI
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Autoliv Development AB
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Autoliv Development AB
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Publication date
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Publication of EP3663140A1 publication Critical patent/EP3663140A1/fr
Publication of EP3663140A4 publication Critical patent/EP3663140A4/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/233—Inflatable members characterised by their shape, construction or spatial configuration comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/207—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in vehicle seats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/23138—Inflatable members characterised by their shape, construction or spatial configuration specially adapted for side protection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/2334—Expansion control features
    • B60R21/2346—Soft diffusers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/235—Inflatable members characterised by their material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/239—Inflatable members characterised by their venting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R21/264—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/23138—Inflatable members characterised by their shape, construction or spatial configuration specially adapted for side protection
    • B60R2021/23146—Inflatable members characterised by their shape, construction or spatial configuration specially adapted for side protection seat mounted
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/233—Inflatable members characterised by their shape, construction or spatial configuration comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other
    • B60R2021/23324—Inner walls crating separate compartments, e.g. communicating with vents
    • B60R2021/23332—Inner walls crating separate compartments, e.g. communicating with vents using independent bags, one within the other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/235—Inflatable members characterised by their material
    • B60R2021/23504—Inflatable members characterised by their material characterised by material
    • B60R2021/23509—Fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/235—Inflatable members characterised by their material
    • B60R2021/23571—Inflatable members characterised by their material characterised by connections between panels
    • B60R2021/23576—Sewing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R21/264—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic
    • B60R2021/2642—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic comprising a plurality of combustion chambers or sub-chambers

Definitions

  • the present invention relates to a passenger protection apparatus including a side airbag apparatus which protects passengers when deployed on the seat side of a vehicle.
  • airbags include, for example, various forms such as: a so-called driver airbag which is expanded from the vicinity of the steering wheel of an automobile so as protect the driver; a curtain airbag which is deployed downward on the inner side of the window of an automobile so as to protect passengers during collisions in the transverse direction of a vehicle, as well as when overturning and during rollover accidents; and a side airbag apparatus which is deployed on the side (seat side) of passengers so as to protect the passenger upon impact in the transverse direction of a vehicle.
  • the present invention relates to a side airbag apparatus housed in a vehicle seat.
  • the side airbag apparatus described in the below mentioned Patent Document 1 includes a main airbag along with an auxiliary airbag.
  • the auxiliary airbag prior to the main airbag, the auxiliary airbag is configured to be expanded and deployed in order to restrain passengers at an early stage.
  • Patent Document 2 discloses a passenger protection apparatus according to the preamble of claim 1. Simultaneously therewith, there is a demand for appropriate passenger protection performance due to improved deployment speed and stabilization of the deployed shape and deploying behavior.
  • the present invention has been created in view of the abovementioned problem, with an object of providing a passenger protection apparatus which includes a side airbag apparatus capable of quickly and properly restraining a passenger.
  • Another object is to provide a passenger protection apparatus including a side airbag apparatus which contributes to the size reduction of an apparatus.
  • a further object is to provide a passenger protection apparatus which can moderate the impact acting on the passenger in a so-called OOP (out of position) case.
  • the present invention is applied to a passenger protection apparatus, including: a vehicle seat having a seat cushion forming a seating face along with a seat back forming a backrest; and a side airbag apparatus housed in this seat.
  • the inside in the vehicle width direction of the frame side wall part denotes the center side (passenger side) of the seat
  • the outside in the vehicle width direction of the frame side wall part denotes the outside (door side, center console side) in the transverse direction of the seat.
  • the first chamber C1 is deployed outside the side support part in the initial stage of operating the airbag apparatus.
  • the first chamber is assuredly deployed such that the frame side wall part receives the reaction force of the first chamber.
  • the second chamber is deployed so as to quickly restrain a passenger from moving to the outside in the vehicle width direction.
  • the surface on the frame side of the second chamber is supported by both this frame side wall part and the first chamber (which has already begun to be deployed) or only by the first chamber, with both the frame side wall part and the first chamber, or just the first chamber, receiving the reaction force when the second chamber is deployed. Therefore, when the passenger enters the second chamber, the pressure from the passenger can be received by the frame side wall part, making it possible to assuredly restrain the passenger in the seat center direction.
  • the present invention further includes an internal expanding part which expands at least on the rear side of the vehicle in the second chamber, wherein the second chamber is configured to be expandable via the gas flowing in from the internal expanding part, such that the internal expanding part begins to expand prior to the deployment of the second chamber.
  • each chamber is deployed in the order of the first chamber, the internal expanding part, and the second chamber, enabling the second chamber to restrain the passenger towards the center side of the seat.
  • At least one first internal vent hole is preferably formed at the boundary part between the first chamber and the second chamber such that the gas inside the first chamber flows into the second chamber.
  • the presence of the first internal vent hole allows the expansion gas to be quickly filled throughout the airbag.
  • the internal expanding part is preferably provided so as to cover the first vent. Such a configuration allows the gas from the first chamber to be directly supplied to the internal expanding part, with this internal expanding part quickly expanding.
  • the internal expanding part can be formed from a cloth member and sewn on the periphery of the first vent. Moreover, the internal expanding part can be continuously provided from the first chamber to the second chamber.
  • “continuously provided” includes integrally molding the internal expanding part with the first chamber, in addition to extending the internal expanding part inside the second chamber in a form similar to the extension of the first chamber.
  • this also includes an embodiment in which the internal expanding part is molded as a member separate from the first chamber, and the edge of the internal expanding part in communication with the first chamber is connected to the outer periphery of an opening part of the first chamber by being sewn thereon, etc., such that coupled openings are substantially congruent.
  • the internal expanding part can be an inner bag molded in a bag shape.
  • a second vent for discharging the gas into the second chamber is formed in this inner bag.
  • the internal expanding part can be a cylindrically molded inner tube or loop diffuser. In this case, it is configured such that the upper and lower ends of this inner tube or loop diffuser open inside the second chamber.
  • the passenger protection apparatus can further include a third chamber disposed in front of the first chamber and coupled to the side face of the second chamber.
  • the front end part of the third chamber can be configured so as to be disposed in front of the front end parts of the first chamber and the second chamber.
  • the width in the anteroposterior direction can be relatively easily increased.
  • the third chamber can be sectioned into a front chamber part and a rear chamber part, wherein at least one fourth internal vent hole can be provided in this section part.
  • the width in the anteroposterior direction can be further increased.
  • the side airbag apparatus includes a type which is deployed on the door side of (outside) the seat, along with a type which is deployed on the vehicle center side of the seat.
  • a side airbag apparatus of a type which is deployed on the vehicle center side of the seat for example, is referred to as a far side airbag apparatus, front center airbag, rear center airbag, etc.
  • front displayed in each figure denotes the front (traveling direction) of a vehicle
  • rear denotes the rear (on the side opposite the traveling direction) of the vehicle
  • inside denotes the inside in the vehicle width direction (on the passenger side)
  • outside denotes the outside in the vehicle width direction (on the door panel side).
  • FIG. 1 is a perspective view mainly illustrating the external shape of a vehicle seat used for a passenger protection apparatus according to Example 1 of the present invention, with an illustration of the airbag apparatus (20) omitted.
  • FIG. 2 is a perspective view illustrating the internal structure (seat frame) functioning as the framework of the vehicle seat illustrated in FIG. 1 , with an illustration of the airbag apparatus (20) also omitted here.
  • FIG. 3 is a schematic side view of the passenger protection apparatus according to Example 1, in addition to illustrating the state in which the airbag apparatus 20 housed therein on the side face (near side) near the door of the vehicle seat is observed from the outside in the vehicle width direction.
  • the present invention is a passenger protection apparatus including: a vehicle seat; and a side airbag apparatus (20) housed in this seat.
  • the vehicle seat according to the present example is configured by: a seat cushion 2 of the part on which a passenger is seated; a seat back 1 forming a backrest; and a headrest 3 coupled to the upper end of the seat back 1.
  • a seat back frame 1f forming the skeleton of the seat is provided inside the seat back 1, while a pad made of a urethane foaming material, etc. is provided on the surface and periphery thereof, and the surface of this pad is covered with a skin 14 such as leather or fabric.
  • a seating frame 2f is arranged on the bottom side of the seat cushion 2, while a pad made of a urethane foaming material, etc. is provided on the upper surface and periphery thereof, and the surface of this pad is covered with a skin 14 ( FIG. 4 ) such as leather or fabric.
  • the seating frame 2f and the seat back frame 1f are coupled via a reclining mechanism 4.
  • the seat back frame 1f is configured in a frame shape by: a side frame 10 arranged so as to be separated into the left and right and extending in the vertical direction; an upper frame coupled to the upper end of this side frame 10; and a lower frame coupled to the lower end thereof.
  • a cushion member is provided outside a headrest frame to configure the headrest 3.
  • FIG. 4 is a cross sectional view illustrating the structure of the passenger protection apparatus according to the present invention, corresponding to part of the cross section in the A1 -A1 direction of FIG. 3 .
  • FIG. 5 is a schematic side view of the passenger protection apparatus according to the present invention and illustrates the state in which the airbag deployed therein is observed from the outside in the vehicle width direction.
  • the side frame 10 can be molded of resin or metal and, as illustrated in FIG. 4 , can be formed into an L shaped cross sectional shape or a U shaped cross sectional shape.
  • the side frame 10 includes a frame side wall part 10a extending in the vehicle traveling direction when the horizontal cross section is seen from above.
  • an airbag module (side airbag apparatus) 20 is fixed to the outside in the vehicle width direction of this frame side wall part 10a.
  • the seat back 1 includes a side support part 12 which swells in the vehicle traveling direction (vehicle front) on the vehicle width direction side (end).
  • a urethane pad 16 is arranged inside the side support part 12, while the side airbag apparatus 20 is housed in a gap of the urethane pad 16.
  • the side airbag apparatus 20 includes: an airbag 34 for restraining a passenger when expanded and deployed; and an inflator 30 for supplying expansion gas to the airbag 34.
  • a start region 26 as a starting point (when the side support part 12 bends towards the passenger side due to the expansion of a second chamber (C2)) is formed in the side support part 12.
  • the start region 26 can be any one of a notch, recess, or thin region, or combinations thereof.
  • the start region 26 only needs to be formed at a urethane 16 part inside the side support part 12, and the start region 26 may also be omitted.
  • the airbag 34 is covered with a flexible cover 20a made of fabric.
  • the airbag 34 for example, can appropriately employ folding or rolling in bellows (hereinafter, "folding” includes rolling), in addition to an appropriate compression method.
  • the symbol 25 denotes a door trim.
  • the first chamber (C1) side on which the inflator 30 is housed is disposed outside in the vehicle width direction of the frame side wall part 10a, while the second chamber (C2) coupled to this first chamber (C1) is arranged inside in the vehicle width direction of the frame side wall part 10a.
  • the airbag 34 includes: the first chamber C1 which surrounds the inflator (30) inside the side support part 12; and the second chamber C2 which is deployed inside in the vehicle width direction of the first chamber C1.
  • the second chamber C2 is deformed such that at least the front side part 14 of the side support part 12 protrudes towards the passenger.
  • This second chamber C2 is deployed so as to contact and press the side support part 12 with the waist part of the passenger.
  • the capacity of the second chamber C2 is set so as to be larger than the capacity of the first chamber C1.
  • the shape and capacity of the second chamber C2 may be adjusted such that the second chamber C2 may only be deployed inside the side support part 12. In other words, the deployed second chamber C2 does not have to protrude to the vehicle front compared with the front end of the cleft side support part 12.
  • the deploying behavior of the first chamber C1 and the second chamber C2 can be adjusted by a method of folding the airbag, the configuration of the folded airbag 34, the setting of the gas jet direction of the inflator 30, the direction of the gas flow between the first chamber C1 and the second chamber C2, etc.
  • chambers constituting the airbag are defined as C1 to C4 substantially along the flow of the expansion gas, a portion thereof does not necessarily coincide with the flow of the gas.
  • the front chamber part is labeled "F”
  • the rear chamber part is labeled "R.”
  • the front chamber part is defined as "C2F”
  • the rear chamber part is defined as "C2R.”
  • An internal vent hole provided between each chamber is represented using the numbers of the chambers coupled thereto, wherein, for example, an internal vent between the first chamber and the second chamber is "V1-2.” Others also follow the same rule.
  • a vent hole for discharging gas to the outside is collectively referred to by the symbol "VF" for convenience irrespective of the location within which the vent hole is provided.
  • the front end thereof is labeled "f”
  • the rear end thereof is labeled "r.”
  • the number (2) corresponding to the number (C2, etc.) of the chamber is assigned.
  • FIG. 6 is a schematic view illustrating the deployed state of an airbag apparatus for the case in which a passenger is seated normally according to Example 1 of the present invention, corresponding to the cross section in the A2-A2 direction of FIG. 5 .
  • FIG. 7 is a side view illustrating the deployed state of the airbag apparatus illustrated in FIG. 6 , in addition to illustrating the configuration and shape of panels constituting the airbag.
  • FIG. 8 is a schematic view illustrating the deployed state of an airbag apparatus for the case in which a passenger is OOP (out of position) according to Example 1 of the present invention.
  • the side airbag apparatus (20) includes: an airbag 34 for restraining a passenger when expanded and deployed; and an inflator 30 for supplying expansion gas to the airbag 34,
  • the airbag 34 includes: a first chamber C1 which houses the inflator 30 and is deployed outside in the vehicle width direction of a frame side wall part 10a; a second chamber C2 which is deployed inside in the vehicle width direction of the frame side wall part 10a with respect to this first chamber C1; and an inner tube 300 which is arranged in the second chamber C2 and expands at least on the rear side of the vehicle in the second chamber C2 via the gas flowing out from the first chamber C1.
  • the first chamber C1 is deployed such that at least a portion thereof, as seen from the vehicle side, overlaps the frame side wall part 10a.
  • the second chamber C2 expands via the gas flowing out from the inner tube 300 as an internal expanding part.
  • the inflator 30 is housed inside the first chamber C1.
  • a cylindrical cylinder type inflator can be used.
  • a pair of upper and lower stud bolts 32 protrude from the outer peripheral part of the inflator 30 towards the inside in the vehicle width direction. These stud bolts 32 are attached (fastened and fixed) to the side frame 10 by nuts.
  • multiple gas jet ports arranged in the peripheral direction are formed in the inflator 30, from which the gas is radially ejected. Note that a diffuser for controlling the flow of the gas can be provided as required.
  • An airbag control ECU (not illustrated) mounted on the vehicle is electrically connected to this inflator 30.
  • a satellite sensor for detecting side collisions is electrically connected to this airbag control ECU.
  • the inflator 30 can be configured to operate when the airbag control ECU detects a side collision based on a signal from this satellite sensor.
  • the airbag 34 further includes a third chamber C3 coupled to the side parts of the first chamber C1 and the second chamber C2.
  • the presence of the third chamber C3 allows the capacity of the first chamber C1 to be relatively small, while the gas emitted from the inflator 30 is more likely to be introduced in the desired direction, resulting in improved rectification effects of the gas.
  • the third chamber C3 is sectioned into a front chamber part C3F and a rear chamber part C3R, with the internal vent hole V3 provided at this section part. Moreover, the vent hole V1-2 is formed at the boundary part between the first chamber C1 and the second chamber C2, while the vent hole V2-3 is formed at the boundary part between the second chamber C2 and the rear chamber part C3R of the third chamber C3.
  • the inner tube 300 is configured to be cylindrically molded so as to extend in the direction perpendicular to the paper face of FIG. 6 (vertical direction of the vehicle), with the upper and lower ends opening inside the second chamber C2.
  • Such an inner tube 300 can be molded from the same cloth member as in other chambers, and as illustrated in FIG. 7 , can be sewn on the periphery of the vent hole V1-2.
  • expansion gas emitted from the inflator 30 flows from the first chamber C1 to the inner tube 300 via the vent hole V1-2, and is subsequently filled into the second chamber C2 from upper and lower openings of the inner tube 300.
  • the gas inside the second chamber C2 flows in a rear chamber part C3R of the third chamber C3 via the vent hole V2-3, and is then discharged from an external vent hole VF (formed at the front end of a front chamber part C3F of the third chamber C3) via the vent hole V3.
  • a protruding expanding part C2P (C2PU, C2PL) is formed in the rear of the second chamber C2.
  • This protruding expanding part C2P (C2PU, C2PL) consists of a part C2PU disposed above two holes 32U, 32L for the stud bolts 32, along with a part C2PL disposed therebelow.
  • protruding expanding parts C2PU, C2PL are formed in order to avoid the position of each hole 32U, 32L for the stud bolt 32, that is, the attachment position of the inflator 30, protruding expanding parts C2PU, C2PL are formed.
  • a non-expanding region 136 is disposed between these two protruding expanding parts C2PU, C2PL, with this non-expanding region 136 fastened and fixed to the stud bolts 32.
  • the rear part of the second chamber C2 overlaps the space for attaching the inflator, necessitating that the rear end of the second chamber C2 be arranged in front of the inflator 30.
  • the second chamber C2 can be extended more rearward than the inflator 30 (stud bolt 32).
  • the second chamber C2 can be sufficiently overlapped with the side frame 10, while the reaction force from the side frame 10 can be utilized when the air bag is expanded and deployed, enabling deployment with a stable behavior and position.
  • each chamber is deployed in the order of the first chamber C1, the inner tube 300, the second chamber C2, and the third chamber C3. That is, all chambers are fully deployed.
  • the gas supplied via the inner tube 300 allows the second chamber to be expanded and deployed so as to restrain the passenger towards the center side of the seat.
  • the first chamber C1 is deployed outside the side support part in the initial stage of operating the airbag apparatus.
  • the first chamber C1 is deployed so as to overlap the frame side wall part 10a, as seen from the vehicle side, the first chamber C1 is assuredly deployed such that the frame side wall part 10a receives the reaction force of the first chamber C1.
  • the second chamber C2 is deployed so as to quickly restrain a passenger P from moving to the outside in the vehicle width direction.
  • the surface on the frame side of the second chamber C2 is supported by both this frame side wall part and the first chamber (which has already begun to be deployed), with both the frame side wall part 10a and the first chamber C1 receiving the reaction force when the second chamber is deployed. Therefore, when the passenger P enters the second chamber C2, the pressure from the passenger P can be received by the frame side wall part 10a, making it possible to assuredly restrain the passenger P in the seat center direction.
  • FIG. 9 is a schematic view illustrating the deployed state of an airbag apparatus for the case in which a passenger is seated normally according to Example 2 of the present invention, corresponding to the cross section in the A2-A2 direction of FIG. 5 .
  • FIG. 10 is a side view illustrating the deployed state of the airbag apparatus illustrated in FIG. 9 , in addition to illustrating the configuration and shape of panels constituting the airbag.
  • Example 2 employs the same structure and exerts the same operations and effects as Example 1 described above in the majority parts thereof, with only differences therebetween described.
  • Example 2 employs a loop diffuser 310 as an internal expanding part.
  • the loop diffuser 310 is configured to be cylindrically molded so as to extend in the direction perpendicular to the paper face of FIG. 9 (vertical direction of the vehicle), with the upper and lower ends opening inside the second chamber C2.
  • Such a loop diffuser 310 is molded from the same cloth member as in other chambers, in addition to functioning to diffuse expansion gas in a range wider than the inner tube 300.
  • expansion gas emitted from the inflator 30 flows from the first chamber C1 to the loop diffuser 310 via the vent hole V1-2, and is subsequently filled into the second chamber C2 from the upper and lower openings of the loop diffuser 310.
  • the gas inside the second chamber C2 flows in a rear chamber part C3R of the third chamber C3 via the vent hole V2-3, and is then discharged from an external vent hole VF (formed at the front end of a front chamber part C3F of the third chamber C3) via the vent hole V3.
  • FIG. 11 is a schematic view illustrating the deployed state of an airbag apparatus for the case in which a passenger is seated normally according to Example 3 of the present invention, corresponding to the cross section in the A2-A2 direction of FIG. 5 .
  • FIG. 12 is a side view illustrating the deployed state of the airbag apparatus illustrated in FIG. 11 , in addition to illustrating the configuration and shape of panels constituting the airbag.
  • Example 3 employs the same structure and exerts the same operations and effects as the abovementioned Example 1 in the majority parts thereof, with only differences therebetween described.
  • Example 3 employs an inner bag 320 as an internal expanding part.
  • the inner bag 320 is molded in a bag shape so as to extend in the direction perpendicular to the paper face of FIG. 11 (vertical direction of the vehicle), and a vent hole Vx-2 in fluid communication with the second chamber C2 is formed.
  • Such an inner bag 320 can be formed from the same cloth member as in other chambers.
  • the vent hole Vx-2 is provided so as to be disposed in the vicinity of the vent hole V2-3 which is provided at the boundary part between the second chamber C2 and the third chamber C3. As a result, the gas discharged from the inner bag 320 will quickly and smoothly flow into the third chamber C3.
  • expansion gas emitted from the inflator 30 flows from the first chamber C1 to the inner bag 320 via the vent hole V1-2, and is subsequently filled into the second chamber C2 from the vent hole Vx-2 of the inner bag 320.
  • the gas inside the second chamber C2 flows in a rear chamber part C3R of the third chamber C3 via the vent hole V2-3, and is then discharged from an external vent hole VF (formed at the front end of a front chamber part C3F of the third chamber C3) via the vent hole V3.
  • the inner tube 300, the loop diffuser 310, and the inner bag 320 which are employed as internal expanding parts, are configured to be completely independent members separate from the first chamber C1, with these members (300, 310, 320) capable of being continuously provided from the first chamber C1 to the second chamber C2.
  • “continuously provided” includes integrally molding the internal expanding parts with the first chamber C1, in addition to extending the internal expanding parts inside the second chamber C2 in a form similar to the extension of the first chamber C2.
  • this also includes an embodiment in which the internal expanding parts are molded as members separate from the first chamber C1, the edges of the internal expanding parts in communication with the first chamber C1 are connected to the outer periphery of an opening part V1-2 of the first chamber C1 by being sewn thereon, etc., such that openings coupling the first chamber C1 to the internal expanding parts (300, 310, 320) are substantially congruent.
  • Examples 4 to 13 to which the internal expanding parts (300, 310, 320) according to the abovementioned Examples 1 to 3 can be applied will hereinafter be described with reference to FIGS. 13 to 22 .
  • components identical or similar to those of the abovementioned examples are labeled with identical reference symbols, with redundant descriptions thereof omitted.
  • Examples 4 to 13 employ the inner tube 300 as the internal expanding part, but can also apply the loop diffuser 310 and the inner bag 320.
  • FIG. 13 is a schematic view illustrating the deployed state of an airbag apparatus according to Example 4 of the present invention, corresponding to the cross section in the A2-A2 direction of FIG. 5 .
  • the side airbag apparatus 20 includes: an airbag 34 for restraining a passenger when expanded and deployed; and an inflator 30 for supplying expansion gas to the airbag 34,
  • the airbag 34 includes: a first chamber C1 which houses the inflator 30 and is deployed outside in the vehicle width direction of the frame side wall part 10a; and a second chamber C2 which is deployed inside in the vehicle width direction of the frame side wall part 10a.
  • the first chamber C1 is deployed such that the rear part thereof, as seen from the vehicle side, overlaps the frame side wall part 10a.
  • a rear end part r2 in an expanding region of the second chamber C2 is deployed so as to be disposed in front of a rear end part r1 of the first chamber C1, as seen from the vehicle side.
  • the inflator 30 is housed inside the first chamber C1.
  • a cylindrical cylinder type inflator can be used.
  • a pair of upper and lower stud bolts 32 protrude from the outer peripheral part of the inflator 30 towards the inside in the vehicle width direction. These stud bolts 32 are attached (fastened and fixed) to the side frame 10 by nuts.
  • Multiple gas jet ports arranged in the peripheral direction are formed in the inflator 30, from which the gas is radially ejected. Note that a diffuser for controlling the flow of the gas can be provided as required.
  • FIG. 14 is a schematic view illustrating the deployed state of an airbag apparatus according to Example 5 of the present invention, corresponding to the cross section in the A2-A2 direction of FIG. 5 .
  • the side airbag apparatus 20 includes: an airbag 34 for restraining a passenger when expanded and deployed; and an inflator 30 for supplying expansion gas to the airbag 34,
  • the airbag 34 includes: a first chamber C1 which houses the inflator 30 and is deployed outside in the vehicle width direction of the frame side wall part 10a; and a second chamber C2 which is deployed inside in the vehicle width direction of the frame side wall part 10a.
  • the first chamber C1 is deployed such that the rear part thereof, as seen from the vehicle side, overlaps the frame side wall part 10a.
  • a rear end part r2 in an expanding region of the second chamber C2 is deployed so as to be disposed in front of a rear end part r1 of the first chamber C1, as seen from the vehicle side.
  • the difference between the present example and Example 4 described above is that only a strap (strip member) 36 provided at the rear end of the second chamber C2.
  • the strap 36 couples the rear end of the second chamber C2 and the stud bolts 32.
  • the rear end of the strap 36 can be coupled to the side frame 10. In such a configuration, the deploying behavior, deployed shape, and deployed position in the anteroposterior direction of the second chamber C2 can be controlled.
  • a non-expanding region can be configured so as to be formed in the rear of the expanding region of the second chamber C2, with this non-expanding region capable of being configured so as to be coupled to the stud bolts 32 for attaching the side frame 10 or the inflator 30 to the side frame 10.
  • FIG. 15 is a schematic view illustrating the deployed state of an airbag apparatus according to Example 6 of the present invention, corresponding to the cross section in the A2-A2 direction of FIG. 5 .
  • the side airbag apparatus 20 includes: an airbag 34 for restraining a passenger when expanded and deployed; and an inflator 30 for supplying expansion gas to the airbag 34,
  • the airbag 34 includes: a first chamber C1 which houses the inflator 30 and is deployed outside in the vehicle width direction of the frame side wall part 10a; and a second chamber C2 which is deployed inside in the vehicle width direction of the frame side wall part 10a.
  • the first chamber C1 is deployed such that the rear part thereof, as seen from the vehicle side, overlaps the frame side wall part 10a.
  • a rear end part r2 in an expanding region of the second chamber C2 is deployed so as to be disposed in front of a rear end part r1 of the first chamber C1, as seen from the vehicle side.
  • the present example is a modified example of the abovementioned Example 5, with the difference being that the second chamber C2 is sectioned into the front and rear so as to form a front chamber part C2F and a rear chamber part C2R.
  • a partition panel P2 is arranged at the boundary part between the front chamber part C2F and the rear chamber part C2R, with a vent hole V2 formed at a portion thereof.
  • the width in the anteroposterior direction of the second chamber C2 is easily enlarged.
  • FIG. 16 is a schematic view illustrating the deployed state of an airbag apparatus according to Example 7 of the present invention, corresponding to the cross section in the A2-A2 direction of FIG. 5 .
  • the side airbag apparatus 20 includes: an airbag 34 for restraining a passenger when expanded and deployed; and an inflator 30 for supplying expansion gas to the airbag 34,
  • the airbag 34 includes: a first chamber C1 which houses the inflator 30 and is deployed outside in the vehicle width direction of the frame side wall part 10a; and a second chamber C2 which is deployed inside in the vehicle width direction of the frame side wall part 10a.
  • the first chamber C1 is deployed such that the rear part thereof, as seen from the vehicle side, overlaps the frame side wall part 10a.
  • a rear end part r2 in the expanding region of the second chamber C2 is deployed so as to be disposed in front of a rear end part r1 of the first chamber C1, as seen from the vehicle side.
  • An internal vent hole V1-4 is formed at the boundary part between the first chamber C1 and the fourth chamber C4 such that the gas inside the first chamber C1 flows into the fourth chamber C4. Therefore, the expansion gas branched from the first chamber C1 is separately fed into the second chamber C2 and the fourth chamber C4, respectively, thereby contributing to the quick deployment of the second chamber C2 and the fourth chamber C4.
  • the width in the anteroposterior direction can be relatively easily increased.
  • FIG. 17 is a schematic view illustrating the deployed state of an airbag apparatus according to Example 8 of the present invention, corresponding to the cross section in the A2-A2 direction of FIG. 5 .
  • the side airbag apparatus 20 includes: an airbag 34 for restraining a passenger when expanded and deployed; and an inflator 30 for supplying expansion gas to the airbag 34,
  • the airbag 34 includes: a first chamber C1 which houses the inflator 30 and is deployed outside in the vehicle width direction of the frame side wall part 10a; and a second chamber C2 which is deployed inside in the vehicle width direction of the frame side wall part 10a.
  • the first chamber C1 is deployed such that the rear part thereof, as seen from the vehicle side, overlaps the frame side wall part 10a.
  • a rear end part r2 in the expanding region of the second chamber C2 is deployed so as to be disposed in front of a rear end part r1 of the first chamber C1, as seen from the vehicle side.
  • the present example is a modified example of the abovementioned Example 7, with most configurations identical.
  • the difference is that a partition panel P6 sections the fourth chamber C4 into a front chamber part C4F and a rear chamber part C4R, with a vent hole V4 provided at this partition panel P6.
  • the width in the anteroposterior direction of the fourth chamber C4 is easily enlarged.
  • FIGS. 18(A), (B) are schematic views illustrating the deployed state of an airbag apparatus according to Example 9 of the present invention, corresponding to the cross section in the A2-A2 direction of FIG. 5 .
  • the examples illustrated in both figures (A) and (B) are configured based on the same concept, only slightly differing in terms of the configuration and structure of a third chamber C3.
  • the side airbag apparatus 20 includes: an airbag 34 for restraining a passenger when expanded and deployed; and an inflator 30 for supplying expansion gas to the airbag 34,
  • the airbag 34 includes: a first chamber C1 which houses the inflator 30 and is deployed outside in the vehicle width direction of the frame side wall part 10a; and a second chamber C2 which is deployed inside in the vehicle width direction of the frame side wall part 10a.
  • the first chamber C1 is deployed such that the rear part thereof, as seen from the vehicle side, overlaps the frame side wall part 10a.
  • a rear end part r2 in the expanding region of the second chamber C2 is deployed so as to be disposed in front of a rear end part r1 of the first chamber C1 and hardly overlap the frame side wall part 10a as seen from the vehicle side.
  • the third chamber C3 coupled to the front end of the first chamber C1 and the side face of the second chamber C2 is further included.
  • An internal vent hole V2-3 is formed at the boundary part between the second chamber C2 and the third chamber C3 such that the gas inside the second chamber C2 flows into the third chamber C3. Note that the first chamber C1 and the third chamber C3 are completely separated.
  • the third chamber C3 is disposed outside the side frame 10, so as to be deployed in front of the first chamber C1 and outside the second chamber C2.
  • the third chamber C3 is deployed in front of the first chamber and in front of the side frame 10, in addition to being partially disposed in front of the second chamber C2.
  • the structure as in figure (B) advantageously allows the flow of gas to smoothly reach the third chamber C3 from the first chamber C1 via the second chamber C2.
  • the expansion gas flows in the order of the first chamber C1, the second chamber C2, and the third chamber C3, and is expanded and deployed in this order. Therefore, the passenger P is quickly restrained by the first chamber C1 and the second chamber C2 in an early stage, allowing the restraint range to be widely assured by the third chamber C3.
  • FIGS. 19(A), (B) are schematic views illustrating the deployed state of an airbag apparatus according to Example 10 of the present invention, corresponding to the cross section in the A2-A2 direction of FIG. 5 .
  • the examples illustrated in both figures (A) and (B) are configured based on the same concept, only slightly differing in terms of the configuration and structure of the third chamber C3.
  • the side airbag apparatus 20 includes: an airbag 34 for restraining a passenger when expanded and deployed; and an inflator 30 for supplying expansion gas to the airbag 34,
  • the airbag 34 includes: a first chamber C1 which houses the inflator 30 and is deployed outside in the vehicle width direction of the frame side wall part 10a; and a second chamber C2 which is deployed inside in the vehicle width direction of the frame side wall part 10a.
  • the first chamber C1 is deployed such that the rear part thereof, as seen from the vehicle side, overlaps the frame side wall part 10a.
  • the second chamber C2 is deployed such that, as seen from the vehicle side, the front part does not overlap the first chamber C1, while the rear part thereof overlaps the frame side wall part 10a.
  • the greatest characteristic of the side airbag apparatus according to the present example is the further inclusion of the third chamber C3 housing the first chamber C1 outside the frame side wall part 10a. That is, the third chamber C3 completely encloses the first chamber C1.
  • the presence of the third chamber C3 allows the capacity of the first chamber C1 to be relatively small, while the gas emitted from the inflator 30 is more likely to be introduced in the desired direction, resulting in improved rectification effects of the gas.
  • the third chamber C3 is sectioned into a front chamber part C3F and a rear chamber part C3R, with the internal vent hole V3 provided at this section part.
  • the vent hole V1-2 is formed at the boundary part between the first chamber C1 and the second chamber C2, while the vent hole V2-3 is formed at the boundary part between the second chamber C2 and the rear chamber part C3R of the third chamber C3.
  • the gas emitted from the inflator flows in the order of the first chamber C1, the second chamber C2, the rear chamber part C3R of the third chamber C3, and the front chamber part C3F of the third chamber C3.
  • the third chamber C3 (C3F, C3R) is disposed outside the side frame 10, so as to be deployed in front of the first chamber C1 and outside the second chamber C2.
  • the third chamber C3 (specifically, C3F) is deployed in front of the first chamber and in front of the side frame 10, in addition to being partially disposed in front of the second chamber C2.
  • the structure as in Figure (B) advantageously allows the flow of gas to smoothly reach the third chamber C3 from the first chamber C1 via the second chamber C2.
  • FIGS. 20(A), (B) are schematic views illustrating the deployed state of an airbag apparatus according to Example 11 of the present invention, corresponding to the cross section in the A2-A2 direction of FIG. 5 .
  • the examples illustrated in both Figures (A) and (B) are configured based on the same concept, only differing in terms of the configuration and structure of a third chamber C3.
  • the side airbag apparatus 20 includes: an airbag 34 for restraining a passenger when expanded and deployed; and an inflator 30 for supplying expansion gas to the airbag 34,
  • the airbag 34 includes: a first chamber C1 which houses the inflator 30 and is deployed outside in the vehicle width direction of the frame side wall part 10a; and a second chamber C2 which is deployed inside in the vehicle width direction of the frame side wall part 10a.
  • the first chamber C1 is deployed such that the rear part thereof, as seen from the vehicle side, overlaps the frame side wall part 10a.
  • the rear end part r2 in the expanding region of the second chamber C2 is disposed slightly in front of the rear end part r1 of the first chamber C1, but extends substantially rearward towards the position of the stud bolts 32.
  • the present example is a modified example of the abovementioned Example 10, with most configurations identical. The difference is that a protruding expanding part C2P is formed in the rear of the second chamber C2. Note that the protruding expanding part C2P of the second chamber C2 employed in the present example is the same as in Example 1 described above.
  • the third chamber C3 (C3F, C3R) is disposed outside the side frame 10, so as to be deployed in front of the first chamber C1 and outside the second chamber C2.
  • the third chamber C3 (specifically, C3F) is deployed in front of the first chamber and in front of the side frame 10, in addition to being partially disposed in front of the second chamber C2.
  • the structure as in figure (B) advantageously allows the flow of gas to smoothly reach the third chamber C3 from the first chamber C1 via the second chamber C2.
  • FIG. 21 is a schematic view illustrating the deployed state of an airbag apparatus according to Example 12 of the present invention, corresponding to the cross section in the A2-A2 direction of FIG. 5 .
  • the examples illustrated in both figures (A) and (B) are configured based on the same concept, only slightly differing in terms of the configuration and structure of the third chamber C3.
  • At least one vent hole V1-3 is formed at the boundary part between the third chamber C3 and the first chamber C1, such that the gas inside the first chamber C1 flows into the third chamber C3.
  • a vent hole V2-3 present at the boundary part between the second chamber C2 and the third chamber C3 is not employed in the present example.
  • the expansion gas is configured to flow from the first chamber C1 to the second chamber C2 and the third chamber C3, the second chamber C2 and the third chamber C3 are substantially simultaneously expanded and deployed. Therefore, advantageously, the passenger can be substantially simultaneously protected by the third chamber (main chamber) C3 and the second chamber (pre-push chamber) C2.
  • the third chamber C3 enables the passenger to be quickly and assuredly restrained in the initial stage of the collision.
  • the third chamber C3 is disposed outside the frame side wall part 10a of the side frame 10, so as to be deployed in front of the first chamber C1 and outside the second chamber C2.
  • the third chamber C3 is deployed in front of the first chamber and in front of the frame side wall part 10a of the side frame 10, in addition to being partially disposed in front of the second chamber C2.
  • FIG. 22 is a schematic view illustrating the deployed state of an airbag apparatus according to Example 13 of the present invention, corresponding to the cross section in the A2-A2 direction of FIG. 5 .
  • the examples illustrated in both Figures (A) and (B) are configured based on the same concept, only differing in terms of the configuration and structure of a third chamber C3. Note that because the present example has a large number of parts common to Example 11 illustrated in FIG. 20 , descriptions will be provided focusing on the differences from Example 11 in order to facilitate understanding.
  • the second chamber C2 when the airbag in the deployed state is observed from the vehicle width direction, the second chamber C2 is configured so as not to overlap the frame side wall part 10a of the side frame 10.
  • a front wall part 210 which protrudes towards the inside (inside in the vehicle width direction) of the vehicle is formed at the front end of the frame side wall part 10a and supported such that the rear end part of the second chamber C2 abuts this front wall part 210.
  • the first chamber C1 is provided so as to surround the inflator 30 in the so-called bag-in bag-out form.
  • the third chamber C3 (C3F, C3R) is disposed outside the side frame 10 so as to be deployed in front of the first chamber C1 and outside the second chamber C2.
  • the third chamber C3 (specifically, C3F) is deployed in front of the first chamber and in front of the side frame 10, in addition to being partially disposed in front of the second chamber C2.
  • the structure as in Figure (B) advantageously allows the flow of gas to smoothly reach the third chamber C3 from the first chamber C1 via the second chamber C2.
  • a side airbag apparatus on the near side has been predominantly mentioned in the Description of the Preferred Embodiment
  • a far side airbag apparatus surface on the far side from a vehicle door of a vehicle seat
  • very small vehicles such as a single seat vehicle (irrespective of the presence of a door, a vehicle including parts with only one seat in a single row), and the like.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Air Bags (AREA)

Claims (15)

  1. Appareil de protection de passagers, comprenant : un siège de véhicule ayant un coussin de siège (2) formant une face d'assise avec un dossier de siège (1) formant un dossier ; et un appareil de coussin gonflable latéral (20) logé dans ce siège, dans lequel :
    le dossier de siège (1) comprend une partie d'appui latérale (12) qui se gonfle dans le sens de déplacement du véhicule (avant du véhicule) du côté du sens de la largeur du véhicule (extrémité) lorsqu'il est monté dans le véhicule,
    une partie de châssis latéral (10) ayant une partie de paroi latérale de châssis (10a) (qui s'étend dans le sens de déplacement du véhicule lorsque la section transversale horizontale est vue de dessus) est disposée à l'intérieur de la partie de support latérale (12) lorsqu'elle est montée dans le véhicule,
    l'appareil de coussin gonflable latéral (20) comprend : un coussin gonflable (34) destiné à retenir un passager lorsqu'il est dilaté et déployé ; et un gonfleur (30) destiné à fournir du gaz d'expansion au coussin gonflable (34),
    le coussin gonflable (34) comprend : une première chambre (C1) qui loge le gonfleur (30) et est déployée à l'extérieur dans le sens de la largeur du véhicule de la partie de paroi latérale de châssis (10a) ; et la première chambre (C1) est déployée de telle sorte qu'au moins une partie de celle-ci, vue du côté du véhicule, chevauche la partie de paroi latérale de châssis (10a),
    caractérisé en ce que
    une deuxième chambre (C2) qui se déploie à l'intérieur dans le sens de la largeur du véhicule de la partie de paroi latérale de châssis (10a) par rapport à cette première chambre (C1) ; et une partie expansible interne qui est disposée dans la seconde chambre (C2), et se dilate au moins sur le côté arrière du véhicule dans la deuxième chambre (C2) par l'intermédiaire du gaz s'écoulant de la première chambre (C1) lorsqu'elle est montée dans le véhicule, et
    et
    la deuxième chambre (C2) est configurée pour être dilatée par l'intermédiaire du gaz s'écoulant de la partie expansible interne.
  2. Appareil de protection de passagers selon la revendication 1, dans lequel :
    un premier évent, dans lequel le gaz s'écoule de la première chambre (C1) vers la deuxième chambre (C2), est formé au niveau de la partie limite entre la première chambre (C1) et la deuxième chambre (C2), et
    la partie expansible interne est prévue de manière à recouvrir le premier évent.
  3. Appareil de protection de passagers selon la revendication 2, dans lequel la partie expansible interne est formée à partir d'un élément en tissu et cousue sur la périphérie du premier évent.
  4. Appareil de protection de passagers selon l'une quelconque des revendications 1 à 3, dans lequel la partie expansible interne est fournie en continu de la première chambre (C1) à la deuxième chambre (C2).
  5. Appareil de protection de passagers selon l'une quelconque des revendications 1 à 4, comprenant en outre une troisième chambre (C3) qui est disposée devant la première chambre (C1) et accouplée à la face latérale de la deuxième chambre (C2).
  6. Appareil de protection de passagers selon la revendication 5, dans lequel la troisième chambre (C3) est disposée devant la partie de châssis latéral (10).
  7. Appareil de protection de passager selon la revendication 5 ou 6, dans lequel la troisième chambre (C3) est divisée en une partie de chambre avant (C3F) et une partie de chambre arrière (C3R).
  8. Appareil de protection des passagers selon l'une quelconque des revendications 5 à 7, dans lequel un deuxième évent, dans lequel le gaz s'écoule de la deuxième chambre (C2) à la troisième chambre (C3), est formé au niveau de la partie limite entre la deuxième chambre (C2) et la troisième chambre (C3).
  9. Appareil de protection de passagers selon l'une quelconque des revendications 1 à 8, dans lequel :
    la partie expansible interne est un sac intérieur moulé en forme de sac, et
    un évent intérieur destiné à évacuer le gaz dans la deuxième chambre (C2) est formé dans ce sac intérieur.
  10. Appareil de protection de passagers selon la revendication 8, dans lequel :
    la partie interne en expansion est un sac intérieur moulé en forme de sac, un évent intérieur destiné à évacuer le gaz dans la deuxième chambre (C2) est formé dans ce sac intérieur, et
    l'évent intérieur est disposé au voisinage du second évent.
  11. Appareil de protection de passagers selon l'une quelconque des revendications 1 à 8, dans lequel :
    la partie expansible interne est un tube intérieur moulé de manière cylindrique (300), et
    les extrémités supérieure et inférieure de ce tube intérieur (300) débouchent à l'intérieur de la deuxième chambre (C2).
  12. Appareil de protection de passagers selon l'une quelconque des revendications 1 à 8, dans lequel :
    la partie expansible interne est un diffuseur en boucle moulé de manière cylindrique (310), et
    les extrémités supérieure et inférieure de ce diffuseur en boucle (310) débouchent à l'intérieur de la deuxième chambre (C2).
  13. Appareil de protection de passagers selon l'une quelconque des revendications 1 à 12, dans lequel une zone non expansible fixée à la partie de paroi latérale de châssis (10a) est formée sur le côté arrière du véhicule dans la partie expansible interne.
  14. Appareil de protection de passagers selon l'une quelconque des revendications 1 à 13, dans lequel, vue du côté du véhicule, la partie d'extrémité arrière d'une région expansible de la deuxième chambre (C2) est disposée devant la partie d'extrémité arrière de la première chambre (C1).
  15. Appareil de coussin gonflable latéral (20) équipé de l'appareil de protection de passagers selon l'une quelconque des revendications 1 à 14.
EP18841073.2A 2017-08-01 2018-07-06 Dispositif de protection d'occupants Active EP3663140B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017149400 2017-08-01
PCT/JP2018/025614 WO2019026538A1 (fr) 2017-08-01 2018-07-06 Dispositif de protection d'occupants

Publications (3)

Publication Number Publication Date
EP3663140A1 EP3663140A1 (fr) 2020-06-10
EP3663140A4 EP3663140A4 (fr) 2020-12-02
EP3663140B1 true EP3663140B1 (fr) 2021-11-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP18841073.2A Active EP3663140B1 (fr) 2017-08-01 2018-07-06 Dispositif de protection d'occupants

Country Status (6)

Country Link
US (1) US11214225B2 (fr)
EP (1) EP3663140B1 (fr)
JP (1) JP6789606B2 (fr)
KR (1) KR102387636B1 (fr)
CN (1) CN110869248B (fr)
WO (1) WO2019026538A1 (fr)

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EP3663140A1 (fr) 2020-06-10
KR102387636B1 (ko) 2022-04-18
CN110869248A (zh) 2020-03-06
CN110869248B (zh) 2022-02-01
WO2019026538A1 (fr) 2019-02-07
US11214225B2 (en) 2022-01-04
JP6789606B2 (ja) 2020-11-25
EP3663140A4 (fr) 2020-12-02
KR20200029022A (ko) 2020-03-17
JPWO2019026538A1 (ja) 2020-04-02
US20210129787A1 (en) 2021-05-06

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